user, then 1 level per selection_name), this also adds conflict resolution
for Persistent Mapping storage in portal_selections. This conflict resolution
is just to prevent restarting transactions.



git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@14543 20353a03-c40f-0410-a6d1-a30d3c3de9de